What is the cheapest airline that flies from Idaho Falls Fanning Field to Washington?

Alaska Airlines, Hawaiian Airlines, and Delta are the most popular carriers operating from Idaho Falls Fanning Field to Washington

How many flights depart from Idaho Falls to State of Washington on average per day?

As of February 2026, there are 4 flights per day flying from Idaho Falls to State of Washington. The most common time of day flights depart is 9:00AM, with 62% of flights taking off at noon.

What airlines fly to State of Washington?

Alaska Airlines, Delta and Hawaiian Airlines are the top three most popular airlines that fly to State of Washington from Idaho Falls according to our data. Alaska Airlines is the first choice among our users, with 73% of people opting to fly with this airline when traveling to State of Washington. Keep in mind that there are 3 different airlines that fly to State of Washington on a routine basis, so you have a few additional options to choose from.

How many flights depart from Idaho Falls to State of Washington on average per week?

The number of flights available between Idaho Falls and State of Washington is 34 per week as of February 2026. The most frequent departure day is Mon, with 15% of weekly flights leaving on this day.

When did momondo last update prices for flights from Idaho Falls Fanning Field Airport to Washington?

Prices for flights from Idaho Falls Fanning Field Airport to Washington are updated daily.

How many operators does momondo search for flights from Idaho Falls Fanning Field Airport to Washington?

The number of operators available for flights from Idaho Falls Fanning Field Airport to Washington is 4 as of February 2026.

How old do you have to be to fly from Idaho Falls Fanning Field Airport to Washington?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Idaho Falls Fanning Field Airport to Washington.

What documentation or ID do you need to fly to Washington?

The travel and health documents you'll need for your trip to Washington may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Washington. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$120 Cheap Flights from Idaho Falls to Washington in 2026

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One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

6:39 pm - 7:18 pm

IDA

PDX

1h 39mnonstop

3:09 pm - 5:49 pm

PDX

IDA

1h 40mnonstop

$120Allegiant Air

Fri, Jun 12 - Mon, Jun 15

6:39 pm - 7:20 pm

IDA

PDX

1h 41mnonstop

3:10 pm - 5:49 pm

PDX

IDA

1h 39mnonstop

$133Allegiant Air

Fri, May 29 - Mon, Jun 1

6:39 pm - 7:18 pm

IDA

PDX

1h 39mnonstop

3:09 pm - 5:49 pm

PDX

IDA

1h 40mnonstop

$153Allegiant Air

Fri, Jun 19 - Mon, Jun 22

4:59 pm - 6:02 pm

IDA

SEA

2h 03mnonstop

8:04 pm - 10:52 pm

SEA

IDA

1h 48mnonstop

$157Alaska Airlines

Sat, Apr 18 - Tue, Apr 21

5:20 pm - 6:21 pm

IDA

SEA

2h 01mnonstop

8:52 pm - 11:36 pm

SEA

IDA

1h 44mnonstop

$177Alaska Airlines

Fri, Mar 13 - Mon, Mar 16

6:55 pm - 12:01 am

IDA

SEA

6h 06m

1 stop

5:30 am - 12:27 pm

SEA

IDA

5h 57m

1 stop

$187Delta

Tue, Mar 10 - Sat, Mar 14

6:58 pm - 11:59 pm

IDA

SEA

6h 01m

1 stop

4:36 pm - 10:40 pm

SEA

IDA

5h 04m

1 stop

$197Delta

Mon, Apr 13 - Tue, Apr 14

6:54 pm - 10:40 pm

IDA

PDX

4h 46m

1 stop

6:00 am - 10:47 am

PDX

IDA

3h 47m

1 stop

$198Delta

Sat, May 9 - Wed, May 13

4:08 pm - 4:50 pm

IDA

PDX

1h 42mnonstop

3:10 pm - 5:49 pm

PDX

IDA

1h 39mnonstop

$214Multiple Airlines

Thu, May 28 - Mon, Jun 1

6:00 am - 9:47 am

IDA

PDX

4h 47m

1 stop

3:09 pm - 5:49 pm

PDX

IDA

1h 40mnonstop

$220Multiple Airlines

Tue, Jun 2 - Fri, Jun 5

Alaska Airlines flights from Idaho Falls to State of Washington

Our best Alaska Airlines deals on Idaho Falls to State of Washington flight tickets

Alaska Airlines

Apr 18

IDA4:59 pmIdaho Falls Fanning Field

2h 03m

SEA6:02 pmSeattle/Tacoma Intl

Apr 21

SEA8:04 pmSeattle/Tacoma Intl

1h 48m

IDA10:52 pmIdaho Falls Fanning Field

$157

Alaska Airlines

Mar 13

IDA5:20 pmIdaho Falls Fanning Field

2h 01m

SEA6:21 pmSeattle/Tacoma Intl

Mar 16

SEA8:52 pmSeattle/Tacoma Intl

1h 44m

IDA11:36 pmIdaho Falls Fanning Field

$177

Alaska Airlines

Mar 9

IDA5:20 pmIdaho Falls Fanning Field

2h 01m

SEA6:21 pmSeattle/Tacoma Intl

Mar 21

SEA8:04 pmSeattle/Tacoma Intl

1h 48m

IDA10:52 pmIdaho Falls Fanning Field

$197

Delta flights from Idaho Falls to State of Washington

Our best Delta deals on Idaho Falls to State of Washington flight tickets

Delta

Mar 10

IDA6:55 pmIdaho Falls Fanning Field

6h 06m

1 stop

SEA12:01 amSeattle/Tacoma Intl

Mar 14

SEA5:30 amSeattle/Tacoma Intl

5h 57m

1 stop

IDA12:27 pmIdaho Falls Fanning Field

$187

Delta

Apr 25

IDA5:47 amIdaho Falls Fanning Field

4h 14m

1 stop

GEG9:01 amSpokane

Apr 25

GEG1:07 pmSpokane

8h 33m

2 stops

IDA10:40 pmIdaho Falls Fanning Field

$280

Delta

Mar 16

IDA6:55 pmIdaho Falls Fanning Field

14h 55m

2 stops

GEG8:50 amSpokane

Mar 22

GEG6:15 amSpokane

15h 01m

2 stops

IDA10:16 pmIdaho Falls Fanning Field

$284

momondo Fare Finder

Use the filters below to find and compare flights from Idaho Falls to Washington that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Idaho FallsPortland

IDA - PDX

IDAPDX

Idaho Falls Fanning Field

Fri 6/12

6:39 pm-7:18 pm

Nonstop1h 39m

Portland

Mon 6/15

3:09 pm-5:49 pm

Nonstop1h 40m

$120

Idaho FallsPortland

IDA - PDX

IDAPDX

Idaho Falls Fanning Field

Fri 5/29

6:39 pm-7:20 pm

Nonstop1h 41m

Portland

Mon 6/1

3:10 pm-5:49 pm

Nonstop1h 39m

$133

Idaho FallsPortland

IDA - PDX

IDAPDX

Idaho Falls Fanning Field

Fri 6/19

6:39 pm-7:18 pm

Nonstop1h 39m

Portland

Mon 6/22

3:09 pm-5:49 pm

Nonstop1h 40m

$153

Idaho FallsSeattle

IDA - SEA

IDASEA

Idaho Falls Fanning Field

Sat 4/18

4:59 pm-6:02 pm

Nonstop2h 03m

Seattle/Tacoma Intl

Tue 4/21

8:04 pm-10:52 pm

Nonstop1h 48m

$157

Idaho FallsSeattle

IDA - SEA

IDASEA

Idaho Falls Fanning Field

Fri 3/13

5:20 pm-6:21 pm

Nonstop2h 01m

Seattle/Tacoma Intl

Mon 3/16

8:52 pm-11:36 pm

Nonstop1h 44m

$177

Idaho FallsSeattle

IDA - SEA

IDASEA

Idaho Falls Fanning Field

Tue 3/10

6:55 pm-12:01 am

1 stop6h 06m

Seattle/Tacoma Intl

Sat 3/14

5:30 am-12:27 pm

1 stop5h 57m

$187

Idaho FallsSeattle

IDA - SEA

IDASEA

Idaho Falls Fanning Field

Mon 4/13

6:58 pm-11:59 pm

1 stop6h 01m

Seattle/Tacoma Intl

Tue 4/14

4:36 pm-10:40 pm

1 stop5h 04m

$197

Idaho FallsPortland

IDA - PDX

IDAPDX

Idaho Falls Fanning Field

Sat 5/9

6:54 pm-10:40 pm

1 stop4h 46m

Portland

Wed 5/13

6:00 am-10:47 am

1 stop3h 47m

$198

Idaho FallsPortland

IDA - PDX

IDAPDX

Idaho Falls Fanning Field

Thu 5/28

4:08 pm-4:50 pm

Nonstop1h 42m

Portland

Mon 6/1

3:10 pm-5:49 pm

Nonstop1h 39m

$214

Idaho FallsPortland

IDA - PDX

IDAPDX

Idaho Falls Fanning Field

Tue 6/2

6:00 am-9:47 am

1 stop4h 47m

Portland

Fri 6/5

3:09 pm-5:49 pm

Nonstop1h 40m

$220

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Idaho Falls to State of Washington

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to State of Washington?

The month of April is, on average, the cheapest month to fly to State of Washington from Idaho Falls, with most prices found around $222. If you aren’t able to travel to State of Washington during the month of April, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $235.

What is the cheapest day to depart on your flight to State of Washington?

The cheapest day to depart from Idaho Falls to State of Washington is on a Thursday. Travelers who choose to depart for State of Washington on a Thursday will often find tickets for as low as $380. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Idaho Falls to State of Washington for around $515.

What is the cheapest time of day to depart on your flight to State of Washington?

The cheapest time of day to fly to State of Washington is in the afternoon when flights can be purchased for as low as $397. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $553 on average. Flights to State of Washington from Idaho Falls at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest Idaho Falls Fanning Field to Washington flight route?

Fly from Idaho Falls Fanning Field to Seattle/Tacoma Intl for the best Idaho Falls Fanning Field - Washington flight prices

How far in advance should I book a flight to State of Washington?

You are more likely to see cheaper flights to State of Washington from Idaho Falls when booking weeks ahead of your departure date. In general, you can expect to find flights to State of Washington for around $296 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to State of Washington from Idaho Falls for as low as $226 on momondo.

What cabin class options are available on Idaho Falls Fanning Field to Washington flights?

There are 4 cabin classes available to choose from on Idaho Falls Fanning Field to Washington flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Idaho Falls to State of Washington flights?

You could potentially save up to 47% on your flight if you consider stops on a Idaho Falls to State of Washington flight.

Cheap Idaho Falls to State of Washington flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Idaho Falls to State of Washington

Best Price Found	$269
Fastest flight time	1h 36m
Direct flights	Every day
Airports in State of Washington	96 airports

The best one-way flight to State of Washington from Idaho Falls in the past 72 hours is $269. The best round-trip flight deal from Idaho Falls to State of Washington found on momondo in the last 72 hours is $295.

The fastest flight from Idaho Falls to State of Washington takes 1h 36m

Direct flights go from Idaho Falls to State of Washington every day.

There are 96 airports in State of Washington. From Idaho Falls there are direct flights to Portland (PDX), Seattle/Tacoma Intl (SEA).

Search flight deals

When did momondo last update prices for flights from Idaho Falls Fanning Field Airport to Washington?
Prices for flights from Idaho Falls Fanning Field Airport to Washington are updated daily.
How many operators does momondo search for flights from Idaho Falls Fanning Field Airport to Washington?
The number of operators available for flights from Idaho Falls Fanning Field Airport to Washington is 4 as of February 2026.
How old do you have to be to fly from Idaho Falls Fanning Field Airport to Washington?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Idaho Falls Fanning Field Airport to Washington.
What documentation or ID do you need to fly to Washington?
The travel and health documents you'll need for your trip to Washington may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Washington. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Idaho Falls to State of Washington?
Based on momondo bookings for flights between Idaho Falls and State of Washington, the leading plane model is Embraer 175, making up 33.87% of the total bookings. Other popular models include Airbus A320-100/200 with 8.06%, Boeing 737 MAX 8 with 6.45%, and Embraer 175 (Enhanced Winglets) with 6.45%.

Best airlines flying from Idaho Falls to State of Washington

Compare and see reviews for airlines that fly from Idaho Falls to State of Washington with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $98	Free Cancellation	Rating 7.9 8,206 reviews	Search Delta flights
Hawaiian Airlines	PriceFrom $119	Free Cancellation	Rating 7.8 2,833 reviews	Search Hawaiian Airlines flights
Alaska Airlines	PriceFrom $177	Free Cancellation	Rating 8.0 11,891 reviews	Search Alaska Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Idaho Falls to Washington?

Finding the right flight to Washington from Idaho Falls is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Washington quick and easy, saving you time and money.

Can I find flights from Idaho Falls to Washington with flexible booking policies on momondo?

Yes. All flights to Washington from Idaho Falls on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Idaho Falls to Washington?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Idaho Falls to Washington.

I’m not ready to book a flight from Idaho Falls to Washington right now. Can momondo alert me if prices change?

Price alerts on flights to Washington from Idaho Falls are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your State of Washington trip

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Flights to Washington, D.C.from $25

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Flights to Seattlefrom $51

Cheap flights from Idaho Falls to Washington from $120

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Idaho Falls to Washington departing on 6/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Alaska Airlines flights from Idaho Falls to State of Washington

Our best Alaska Airlines deals on Idaho Falls to State of Washington flight tickets

Delta flights from Idaho Falls to State of Washington

Our best Delta deals on Idaho Falls to State of Washington flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Idaho Falls to Washington that are best for you.

See travel insights to Washington from

How to get the cheapest flight ticket from Idaho Falls to State of Washington

What is the cheapest month to fly to State of Washington?

What is the cheapest day to depart on your flight to State of Washington?

What is the cheapest time of day to depart on your flight to State of Washington?

What is the cheapest Idaho Falls Fanning Field to Washington flight route?

How far in advance should I book a flight to State of Washington?

What cabin class options are available on Idaho Falls Fanning Field to Washington flights?

Can stopping save me money on Idaho Falls to State of Washington flights?

What is the cheapest airline that flies from Idaho Falls Fanning Field to Washington?

What airlines fly to State of Washington?

How many flights depart from Idaho Falls to State of Washington on average per day?

How many flights depart from Idaho Falls to State of Washington on average per week?

Cheap Idaho Falls to State of Washington flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Idaho Falls to State of Washington

Best Price Found

Fastest flight time

Direct flights

Airports in State of Washington

Best airlines flying from Idaho Falls to State of Washington

Compare and see reviews for airlines that fly from Idaho Falls to State of Washington with momondo

Why use momondo?

Why should I use momondo to find a flight deal from Idaho Falls to Washington?

Can I find flights from Idaho Falls to Washington with flexible booking policies on momondo?

How can momondo help me find flights from Idaho Falls to Washington?

I’m not ready to book a flight from Idaho Falls to Washington right now. Can momondo alert me if prices change?

An easier way to manage your State of Washington trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Washington

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